## Abstract The role of steric factors in magnetic non‐equivalence anisochronism of complex geminal groups and of their fragments in compounds of the general formula RCH(Ph)CH(COOR′)~2~ has been investigated. CMR anisochronism is more sensitive to conformational and other steric changes than is PMR
Nuclear magnetic resonance spectroscopy. Analysis of the 1H and 13C spectra of Br13CH213CH2Br
✍ Scribed by Raymond E. Carhart; John D. Roberts
- Publisher
- John Wiley and Sons
- Year
- 1971
- Tongue
- English
- Weight
- 200 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The ^1^H and ^13^C NMR spectra of 1,2‐dibromoethane‐^13^C~2~ have been analyzed to determine the magnitude (38·9 Hz) and sign (positive) of ^1^J(CC) relative to those of ^3^J(HH) (positive). This type of coupling appears to be rather insensitive to the presence of bromine or methyl as substituents on the carbons.
📜 SIMILAR VOLUMES
substituted 4-methylcoumarins (4-methyl-2H-1 -benzopyran-2-ones) have been recorded. The effects of an alkyl side-chain at C-3 on the chemical shift values and that of a methoxy or an acetoxy group
## Abstract Carbon‐13 NMR spectra of some polychlorinated 2‐phenoxyphenols have been obtained. The substituent chemical shifts obtained by varying the chlorine substitution pattern of one ring are very similar to those reported for the corresponding diphenyl ethers. Thus, the replacement of a 2‐chl